GPU gone?

jonney_joop

jonney_joop

jonney_joop

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Joined
5 Nov 2012
Posts
405
Hi all.

A few days ago i decided to flush my water cooling loop as it has been over 12months since initially installed it.

After i drained it, took it apart and cleaned out the block, i then reinstalled it all together and added new coolent. I then did a 24 hour leak test over the weekend and all was well, no leaks whatsoever.

My next step was to hook up all the cables and then turn on the system. I turned it on and booted onto my windows 8 usb stick and installed windows 8. Take a look at the issue on my youtube video. You can skip and watch the last 20seconds of the video.

I then tried to reinstall windows 7 thinking its a win8 issue and i managed to install win 7 and got as far as going into desktop installing a few apps and installing the nvidia drivers. After installing the nvidia drivers it asks me to restart so i did. When i restarted it never loaded windows 7 and always got a blank screen.

Is my GPU ****ed? CPU maybe? mobo? PSU? My guess it is the GPU which now forces me to cough up £300 :(

Any suggestions on what i can try to fix the GPU? or to do more tests to determin that it is the gpu?

Thanks in advance


System specs:

i7 920 cpu
Nvidia 480gtx(dead?)
corsair 850W Gold PSU
crucial M4 SSD 128gb
DVD writer
3 1TB SATA hdd's

Water cooling loop
XSPC reserviour in bay
ex-ddc pump
EK supreme HF cpu block
EK 480gtx plexi waterblock




Issue
I will let the video do the talking.

http://www.youtube.com/watch?v=f_AqpozJccg&feature=g-upl
 
Looks like a corrupt display driver issue to me. Just try re-format again and reinstall Windows. Not much point wasting time doing other diagnostics seeming you've not done much else prior installing Windows.
 
Ok i will try and reinstall win 7 then and this time try a different display driver as the one i tried before did not help boot win 7 properly.

Question, if the GPU is screwed then that would mean i would not be able to launch the windows installer GUI right? Or go to win 7 desktop without the graphics drivers installed?
 
Your GPU is fine, if it was screwed it wouldn't even get as far as it is. Or at least without showing any artifacts etc (typically anyway).

Let us know how the re-format goes.
 
Cool ok i will try that.

I have also reinstalled win 7 again and it works fine when i just use the VGA default drivers. ic an reboot to win 7 fine and also browse the desktop, install apps etc etc.

i need to try a different driver as the one i installed before completely screwed up win 7
 
Can you memtest the memory? I had errors like that installing windows, it turned out a memory chip was at fault
 
Last edited:
I had exactly the same issues caused by faulty memory modules. Run memtest and remove all the sticks of RAM bar one, run memtest, do what you usually do and try to use over 4GB of RAM and swap over the modules. See if that makes a difference.
 
Hi All i tried to reinstall 4 different nvidia drivers and it did not work so we can scratch that being a driver issue.

i then did a memory test using mmtest and it passed fine.

The next thing i did was to drain my loop again and take out my gpu.

i observed the GPU and there was no single damage marks or anything on it or around the pci e contacts.

i then checked the pci e lane for any visible dusts and again looks clean but just to make sure i used air can spray to spray any unvisible stuff that may be inside there.

I now hooked up the loop back up and refilled it but this time without the gpu installed. i will now take out my 260gtx tonight from my htpc and dump it inside my main rig and see how it goes.

if it installs the drivers or win 8 well, i will then test and play a game or two for 30mins or so just to make sure and if all passes fine, The next step is to then reinstall the gpu loop, see if it works now and if it doesnt we can conclude that the 480gtx is screwed.

it is a bit tricky testing my 480gtx on my htpc because it has a waterblock.
 
Update:

Took out my 480gtx gpu and added my 260gtx and guess what, win 7 booted fine fully with the proper nvidia drivers. i then reinstalled win 8 and it all went fine as well.

i am going to test the 480gtx once more on my rig just to make sure that maybe i did not seat it properly or something and if all fails we can safely say the gpu is ****ed :(
 
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